Everything I read about retrofitting radiant floor heating under an
existing floor says to add plenty of insulation to direct the heat
upwards. Since our insulated basement is not heated and we'd like to add
radiant to the floor above, would not insulating (or only
lightly) between the them take some of the chill out of the basement
while most of the heat will still go towards the floor above? We don't
want to fully heat the basement, just get the chill out. Thanks.
If you don't insulate under the tubes, it will not force the heat up
enough to heat the floor well. Run the tubing, insulate, and add a
smallish radiant panel on the same circuit in the basement to take the
chill off. probably on its own loop though
I put foam pad about 1/4" thick that you can buy for floating wood
floor like pergo on top of cement then I used tapcon screws to hold
down 1" X 4" s spaced 16" on center. Then installed 3/4" OSB tongue &
groove, 1 sheet at a time, then I snaked 1/2' pex pipe between the 1"X
4" it is kind of tricky to hold the pex down before you put the next
sheet of OSB down but is possible. I did it for 3 bedrooms and a large
family room. I also put in 4 different thermostats.
Good LUCK !!!
but If you desire to occasionally heat the basement living area, best to
split ( zone ) the entire system.......
You can perhaps maintain min basement temps with above, ( uninsulated mid
floor )but if you occasionally might wish to heat the entire basement upon
demand, then suggest adding a zone--added zone being a system of forced air
w/ water heating coils / ducting to service just the basement.
Thanks, I wish that was the way we could go but I don't think our
budget can handle adding heat to the basement, but I don't know. What
is the benefit of a forced air system in the basement over adding
radiant heat? Is it cheaper?
ahh install radiant floor for upstairs, and say a inch of insulation.
wait a winter and add more insulation if you want.
the disadvantage of this is wasting energy heating basement
forced air for basement would likely be cheaper, even a mini furnace
you can turn on when you want/
whats your current heating arrangement?
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